MCM


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MCM

(MultiChip Module or MicroChip Module) A chip package that contains several bare chips mounted close together on a substrate (base) of some kind. The short tracks between the chips increase performance and eliminate much of the noise that external tracks between individual chip packages can pick up. MCM also allows CMOS and bipolar technologies to be used in the same package.

MCMs are classified by substrate: an MCM-C uses a ceramic substrate with wire bonding between the chips. MCM-D uses a dielectric layer over a ceramic, glass or metal substrate, and thin film interconnects are created on the dielectric layer. MCM-S uses a silicon substrate with tracks created in the silicon like regular ICs. Transistors can also be formed in the substrate. MCM-L uses a laminated circuit board with up to 25 tracking layers. MCM-L evolved into the multichip module (see MCP).

MCMs followed "hybrid microcircuits," which used a ceramic base, but MCMs typically have higher component and tracking densities. See system in package, chip package and Trilogy.

MCM

Abbr. for “thousand circular mills.” See wire size.
References in periodicals archive ?
To date, MCM caters to around 400 full-time students along with visiting students who opt for summer semesters.
MCM Asia Limited, a subsidiary of MCM, is regulated by the Securities and Futures Commission (SFC) of Hong Kong and holds a licence to carry out Type 1 (dealing in securities), Type 2 (dealing in futures contracts) and Type 4 (advising on securities) regulated activities under the Securities and Futures Ordinance (SFO).
The MCM said its acquisition of the two technologies would be used by its senior high-school learners and its engineering and computer science students.
Ahmed Hamza, MCM president, said, that since 2011, MCM started to focus on raising political awareness, "every year we introduce something new that acts as a supplement to the quality of the service we provide.
Located in the village of M'bwana about 35 kilometers north of Blantyre, MCM also serves two adjacent villages: Jamali and Mwanzama, accessible only over poorly maintained dirt roads.
In 1984, when the armed forces published a new MCM, the loose-leaf format adopted in 1969 was continued.
How stem cells manage to quickly transition through the G1 phase without risking incomplete MCM loading and resultant DNA damage has been a mystery.
In total, water delivered in the entire semester increased by 4 percent to 355.2 mcm from 340 mcm.
Results: MCM was diagnosed in 26 (0.12%) on fetal scans (15 male and 11 females).
The US Navy has been the first Western navy to move toward this operational concept, providing an organic MCM capability for expeditionary forces by introducing rotary-wing and non-specialised but multirole platforms equipped with dedicated equipment.
MCM Liverpool Comic Con debuts on March 12 to 13 2016 at Exhibition Centre Liverpool, the brand new, state-of-theart exhibition centre located on Liverpool's Waterfront.
These materials were discovered by Mobil company, who define MCM as Mobil Crystalline Matter, where MCM-41 was firstly introduced.